So I have a 2009 Macbook pro 2.26 4gb of ram and for 3 months now it has given me issues with lagging and beach balling... It freezes when I type then catches up and finishes what I typed. I have done a reinstall 3 times, replace the SATA cable on it and still getting the issue. Now I have notice that a restart work for only a short time. I have clean the computer's files several times. I do notice it more in internet programs but that could be a coincidence. So in comes my question: Should I replace my LB or HD? Please tell me any info you have.